I just starting using late additions for LME. How should I do this with DME? 1/3 at beginning of boil and 2/3 with 15-20 minutes left? Also, what if the recipe calls for corn sugar. Should the corn sugar be added at the suggested time or at a different time?
Doesn't matter when you add the rest, but you do need some in the beginning for hop utilization. Corn sugar can be added anytime, just hot enough that it dissolves. You can do it when you add your late DME addition.